CHAPTER 25. Mechanochemical Activation and Catalysis

M. N. Kopylovich, A. Ribeiro, E. C. Alegria
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引用次数: 2

Abstract

Chemical transformations induced by mechanical force in solids are remarkable since they facilitate syntheses that are normally difficult to achieve in solution and thus allow the preparation of new molecules and materials or drastic improvements of the yields and selectivities. In many cases, the noncovalent interactions (NCIs) with mechanochemical treatment differ significantly from those which occur in analogous solvent-assisted processes. Moreover, if a “mechanocatalyst” is introduced into the system, it can additionally alter the NCIs, bond energies and properties of the reaction intermediates. As result, the outcome of many mechanocatalytic reactions can be very different in terms of efficiency or even reaction pathways compared with the traditional solution-based procedures or noncatalytic mechanochemical processes. Accordingly, in this chapter, certain mechanocatalytic reactions in which the NCIs play a key role are overviewed and discussed. Additionally, an overview of some experimental techniques used to study mechanochemical activation and the respective NCIs is also provided.
第25章。机械化学活化与催化
在固体中由机械力引起的化学转化是显著的,因为它们促进了通常在溶液中难以实现的合成,从而允许制备新的分子和材料,或大幅度提高产量和选择性。在许多情况下,机械化学处理的非共价相互作用(NCIs)与类似溶剂辅助过程中的非共价相互作用有很大不同。此外,如果在体系中引入“机械催化剂”,它还可以改变反应中间体的NCIs、键能和性质。因此,与传统的基于溶液的程序或非催化机械化学过程相比,许多机械催化反应的结果在效率甚至反应途径方面可能有很大不同。因此,在本章中,对NCIs起关键作用的某些机械催化反应进行概述和讨论。此外,还提供了一些用于研究机械化学活化和各自NCIs的实验技术的概述。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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